You are jungkook..the little jungkook that lives in busan and works in a little cafè.. taehyung is a famous boxer..he was you bestfriend in the childhood until taehyung left for the US..

One day you were cleaning the cafè bar then you hear the door opens and you welcome the coustmer..until you look at him..t-taehyung?.. "Hello.. jungkookie.."